JP2835927B2 - Mounting structure of leveling device - Google Patents

Abstract

PURPOSE:To reduce the number of part items for installation and improve installation work by fixing a case to a member on the fixing side by rotating the case for a specified angle, with a holding cylindrical member inserted in a fitting portion. CONSTITUTION:A holding cylindrical member 9 formed in the lower portion of a case 6 of a leveling device 5 is first inserted in a fitting portion 13 of a lamp body 2. In this case, the front face of the case 6 comes in contact with an O ring 19. In this state, the case 6, pushed on the side of the body 2, is rotated in a direction of a rotation stop protrusion 11 approaching to a recess portion 18, with an adjusting screw as the center. On the other hand, the protrusion 11 moves toward the recess portion 18, sliding along back surface of a rear wall of the body 2, the sliding being made smoothly. When the case 6 is thus turned for about 60 degrees, a fitting protrusion portion 10 of the cylindrical member 9 gets on flat surface at the front end of the fitting portion 13 and also the protrusion 11 is fitted in the recess portion 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel leveling device mounting structure. More specifically, a leveling device for changing the irradiation angle of a headlamp to a fixed-side member of a leveling device (for example, a lamp body in a headlamp of a movable mirror type or a vehicle body in a headlamp of a movable unit type). The present invention is to provide a novel leveling device mounting structure which is a mounting structure, in which the number of parts can be reduced, the workability of mounting on the fixed side member is good, and the positioning and rotation prevention with respect to the fixed side member are easy. Is what you do.

[0002]

2. Description of the Related Art For example, in a headlamp of a so-called movable mirror type in which a reflecting mirror is supported so as to be tiltable with respect to a lamp body, a case body of a leveling device is mounted on the lamp body and protrudes from the case body. The tip of the adjusting screw is connected to the turning end of the reflecting mirror.

FIGS. 12 and 13 show a conventional example of a mounting structure of such a leveling device to a headlamp.

A is a headlamp, and a headlamp a
Is composed of a lamp body b having an open front, a reflecting mirror c tiltably supported by the lamp body b, and a leveling device d for tilting the reflecting mirror c.

[0005] The reflecting mirror c is supported at three points with respect to the lamp body b, and the leveling device d is interposed at one of the points.

The leveling device d is a box-shaped case body e, a drive mechanism (not shown) housed in the case body e, protrudes from the case body e, and is moved in the front-rear direction by the drive mechanism. And an adjusting screw f.

In the leveling device d, the adjusting screw f is inserted into the lamp body b through an insertion hole g formed in the lower rear portion of the lamp body b, and the case body e
Are screwed to the back of the lamp body b by three screws h, h, h.

The adjusting screw f inserted into the lamp body b has its tip connected to the turning end of the reflecting mirror c.

Then, the adjusting screw f is moved in the front-rear direction by the driving mechanism of the leveling device d, so that the turning end side of the reflecting mirror c connected to the tip of the adjusting screw f is moved in the front-rear direction. The inclination angle of c is changed, whereby the irradiation angle of the headlamp is changed.

[0010]

In the above-mentioned conventional mounting structure of the leveling device, the mounting of the leveling device to the lamp body is performed by three screws.
Three screws are required, and three screws must be screwed in for installation.

Therefore, when the leveling device is mounted on the lamp body, there are problems that the number of parts for the mounting is large and that the assembling workability is poor.

[0012]

In order to solve the above-mentioned problems, the mounting structure of the headlamp leveling device according to the present invention has a holding cylinder in which an adjusting screw is inserted into one of a fixed member and a case body of the leveling device. And an engaging portion to which the holding cylinder portion is locked is formed on the other of the case body and the fixed side member, and the case body is fixed to the fixed side member with the holding cylinder portion inserted into the engaging portion. By rotating the case body by a predetermined angle with respect to the case body, the case body is locked to the fixed-side member, and a detent projection is provided on one of the fixed-side member and the case body, and on the other of the case body and the fixed-side member. When the case body is rotated by the predetermined angle with respect to the fixed side member in a state in which the holding cylinder portion is inserted into the engaging portion, the rotation stopping protrusion forms the engaged portion to be engaged with the rotation stopping protrusion. Engage with engaged part Those were Unishi.

[0013]

Therefore, in the mounting structure of the headlamp leveling device of the present invention, the leveling device simply rotates the case body by a predetermined angle with respect to the fixed side member with the holding cylinder portion inserted into the engagement portion. It can be attached to the fixed side member, and the mounting workability to the fixed side member is good,
No special parts are required for mounting, the number of parts can be reduced as compared with the conventional mounting structure, and when the case body is mounted in a predetermined direction with respect to the fixed side member, Since the engaged portion is engaged, positioning of the leveling device with respect to the fixed-side member and rotation prevention can be realized with a simple structure.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the mounting structure of the headlamp leveling device of the present invention will be described below with reference to the illustrated embodiments.

FIGS. 1 to 6 show a first embodiment of a mounting structure of a headlamp leveling device according to the present invention.

In the figure, reference numeral 1 denotes a headlamp, 2 denotes a lamp body thereof, 3 denotes a reflecting mirror rotatably supported on the lamp body 2 in a vertical direction, and 4 denotes a lens covering a front opening of the lamp body 2. It is.

The reflecting mirror 3 is supported on the lamp body 2 at three points, and a leveling device 5 is interposed at one of the three points.

In this embodiment, the reflecting mirror 3 is a tilting member whose irradiation angle is changed by tilting it.
The lamp body 2 is a fixed side member for fixing the leveling device 5, but in addition, a lamp unit itself in which a reflecting mirror and a light source are arranged in a space defined by the lamp body and the lens. Can be applied to a movable unit type headlamp in which the lamp unit is tiltably supported with respect to the vehicle body. In such a case, the lamp unit serves as a tilting member, and the vehicle body serves as a fixed side member.

The leveling device 5 has a box-shaped case body 6, a drive mechanism (not shown) housed in the case body 6, and projects from the case body 6, and is moved in the front-rear direction by the drive mechanism. Adjusting screw 7 and the like.

Although not shown, the case body 6 is formed by integrally combining a front case and a back case, which are divided into two front and rear parts.

An insertion hole 8 through which the adjusting screw 7 protrudes forward from the case body 6 is formed at a position lower than the center of the front surface of the case body 6. A cylindrical holding tube portion 9 protruding forward from the peripheral edge portion is integrally formed.

On the outer peripheral surface of the distal end of the holding cylinder 9, three locking projections 10, 10, and 10 projecting outward are provided. The portions 9 are formed at equal intervals in the circumferential direction.

The front surfaces of the locking projections 10, 10 and 10 have inclined surfaces 10a and 1a which are displaced rearward as they go outward.
0a and 10a, and the rear surface thereof, that is, the surface facing the front surface of the case body 6 is formed as smooth surfaces 10b, 10b and 10b substantially perpendicular to the axis of the holding cylinder 9. Smooth surfaces 10b, 10b, 10b and case body 6
An appropriate space is formed between the front surface and the front surface. This “appropriate interval” will be described later.

Two of the three locking projections 10, 10, 10 have a substantially trapezoidal shape when viewed from the axial direction of the holding cylinder 9, and the other one has a substantially sectorial shape. Is formed.

Reference numeral 11 denotes a detent protrusion projecting from the front surface of the case body 6 above the holding cylinder portion 9 and near the upper end, and has a small columnar shape. Is chamfered to form a tapered portion 11a.

Reference numeral 12 denotes an insertion hole formed at the lower rear portion of the lamp body 2. A ring-shaped engaging portion 1 which protrudes forward and rearward and extends annularly is formed at an opening edge of the insertion hole 12.
3 are integrally formed, and the engaging portion 13 slightly projects forward from the rear wall of the lamp body 2 and slightly projects rearward from the rear wall.

The inner diameter of the engaging portion 13 is substantially the same as or slightly larger than the outer diameter of the holding cylinder 9 of the case body 6 of the leveling device 5.

Numerals 14, 14, 14 are insertion grooves formed in the inner peripheral surface of the engaging portion 13, and engage the locking projections 10, 10, 10 formed in the holding cylinder 9 with the lamp body 2. It is for insertion from the outside to the inside, and the insertion groove 14,
14 and 14 are formed at equal intervals in the circumferential direction,
Each locking projection 1 corresponding to the shape and size as viewed from the axial direction
The shape and size of 0, 10, and 10 are substantially the same.

The positions where the insertion grooves 14, 14, 14 are formed are the locking projections 1 in a state where the case body 6 is placed in the correct direction.
In relation to the formation positions of 0, 10, and 10, approximately 60 in the circumferential direction
It is formed with a stagger.

The end surfaces of the engaging portions 13 inside the lamp body 2 are inclined surfaces 15a, 15a, which are displaced forward from the side edges of the insertion grooves 14, 14, 14 in the circumferential direction.
15a, and flat surfaces 15b and 15 such that a substantially central portion between the insertion grooves 14 and 14 is substantially perpendicular to the axial direction.
b, 15b.

The distance between the flat surfaces 15b, 15b, 15b of the rear end surface and the front end surface of the engaging portion 13 is as follows:
The smooth surfaces 10b, 10 of the locking projections 10, 10, 10
b, 10b and the space between the front surface of the case body 6 are formed substantially the same.

Reference numeral 16 denotes an annular wall protruding concentrically on the rear surface of the rear wall of the lamp body 2 so as to surround the engaging portion 13. 13 is formed to be slightly larger than the amount of protrusion of the lamp body 2 from the rear wall, whereby an annular groove 17 (hereinafter referred to as an “O-ring groove”) is formed between the engagement portion 13 and the annular wall 16. It is formed.

Reference numeral 18 denotes an engaging portion 13 on the rear wall of the lamp body 2.
And a recess formed at a position corresponding to the detent protrusion 11 in a state where the case body 6 is placed in a correct direction, the size of which is substantially the same as the size of the detent protrusion 11. Have been.

An O-ring 19 is fitted into the O-ring groove 17 of the lamp body 2 and
Is projected slightly rearward from the rear end edge of the annular wall 16.

The leveling device 5 is mounted on the lamp body 2 as follows.

First, the holding cylinder 9 formed at the lower part of the case body 6 of the leveling device 5 is connected to the engaging part 1 of the lamp body 2.
3 from behind.

At this time, the locking projections 10, 1,
Since the positional relationship between the insertion grooves 14, 14, and 14 of the engagement portions 13 is shifted by about 60 degrees in the circumferential direction, the case
Is rotated in the circumferential direction by 60 degrees from the correct direction (the direction in which the rotation stopping projection 11 is located directly above the holding cylinder 9), and the holding cylinder 9 is inserted into the engagement portion 13, and each locking projection is 10 are inserted into the corresponding insertion grooves 14 respectively.

When the holding cylinder 9 is inserted into the engagement portion 13, the front surface of the case body 6 comes into contact with the O-ring 19.

In this state, the adjusting screw 7 is pressed while the case body 6 is pressed against the lamp body 2.
The case body 6 is rotated in a direction in which the detent protrusion 11 and the concave portion 18 approach each other.

At this time, the locking projections 10, 1,
0, 10 smooth surfaces 10b, 10b, 10b
And the case body 6 is moved slightly further forward, as it rides on the inclined surfaces 15a, 15a, 15a of the front end surface of
The O-ring 19 is crushed.

On the other hand, the tip of the rotation stop projection 11 moves toward the concave portion 18 while sliding on the rear surface of the rear wall of the lamp body 2, and the tip of the rotation stop projection 11 is tapered. Since it is formed in the portion 11a, it is smoothly performed.

When the case body 6 is rotated by about 60 degrees, the locking projections 10, 10, 10 of the holding cylinder 9 ride on the flat surfaces 15b, 15b, 15b of the front end face of the engaging portion 13 at the same time. The rotation stop projection 11 is engaged with the recess 18.

As described above, the case body 6 of the leveling device 5 is attached to the lamp body 2 which is a fixed-side member, and the holding cylinder 9 of the case body 6 is attached in a state of being pressed against the engaging portion 13. Therefore, the leveling device 5 does not easily come off, and the leveling device 5 does not rotate with respect to the lamp body 2 due to the engagement between the rotation stopping protrusion 11 and the concave portion 18.

The adjusting screw 7 has a screw shaft portion 22 at the front end thereof, and the screw shaft portion 22 is screwed to a nut 23 supported at a position near the turning end of the reflecting mirror 3. Thereby, the leveling device 5 and the reflecting mirror 3 as a tilting member are connected.

The adjusting screw 7 is moved in the front-rear direction by a driving mechanism (not shown) accommodated in the case body 6, whereby the reflecting mirror 3 is tilted up and down.

In this embodiment, the rotation preventing means 11 is formed on the case body 6 of the leveling device 5 and the concave portion 18 is formed on the lamp body 2 as means for preventing the leveling device 5 from rotating with respect to the lamp body 2. Conversely, the leveling device 5
A concave portion may be formed on the case body 6 and a detent protrusion may be formed on the lamp body 2. Further, the engaged portion to which the detent protrusion is engaged is not limited to the concave portion 18 as in the above embodiment. Or small holes.

FIGS. 7 to 11 show a second embodiment of the mounting structure of the leveling device according to the present invention.

The second embodiment differs from the first embodiment only in the structure of the leveling device mounting portion of the lamp body, and the other parts are the same as those in the first embodiment. Therefore, the different parts described above will be mainly described in detail, and the same parts as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment. Is omitted.

An insertion hole 22 is formed on the rear surface of the lamp body 2A, and a cylindrical support cylinder 23 is provided to project rearward from the periphery of the insertion hole 22.

A support edge 24 protruding inward is formed at the rear end of the support cylinder 23, and an annular engaging portion 25 having a short axial length is formed on the inner peripheral edge of the support edge 24. I have. An annular O-ring groove 26 is formed between the rear end of the engaging portion 25 and the rear end of the support cylinder 23.

The inner diameter of the engaging portion 25 is determined by the leveling device 5.
Is formed to be substantially the same as or slightly larger than the outer diameter of the holding cylinder 9 of the case body 6.

Reference numerals 27, 27, 27 denote insertion grooves formed in the inner peripheral surface of the engaging portion 25, and engage the locking projections 10, 10, 10 formed in the holding cylinder portion 9 with the lamp body 2. It is intended to be inserted from the outside to the inside.
27, 27 are formed at equal intervals in the circumferential direction,
Each locking projection 1 corresponding to the shape and size as viewed from the axial direction
The shape and size of 0, 10, and 10 are substantially the same.

The positions where the insertion grooves 27, 27, 27 are formed are the locking projections 1 with the case body 6 placed in the correct direction.
In relation to the formation positions of 0, 10, and 10, approximately 60 in the circumferential direction
It is formed with a stagger.

The end surface of the engaging portion 25 inside the lamp body 2 is inclined from the side edges of the insertion grooves 27, 27, 27 so as to be displaced forward as going in the circumferential direction.
In planes 28b and 28, a substantially central portion between the insertion grooves 27 and 27 is substantially perpendicular to the axial direction.
b, 28b.

The spacing between the flat surfaces 28b, 28b, 28b of the rear end surface and the front end surface of the engaging portion 25 is
The smooth surfaces 10b, 10 of the locking projections 10, 10, 10
b, 10b and the space between the front surface of the case body 6 are formed substantially the same.

Reference numeral 29 denotes a fixed wall protruding rearward from the rear surface of the lamp body 2A, the rear end of which is substantially in the same plane as the rear end of the support tube 23, and the rear end edge of which has an engagement notch. 30 are formed. One end 29 a of the fixed wall 29 is curved in a direction away from the support cylinder 23.

The leveling device 5 is mounted on the lamp body 2A as follows.

First, the holding tubular portion 9 formed at the lower portion of the case body 6 of the leveling device 5 is inserted into the engaging portion 25 of the lamp body 2A from behind. Prior to this, the O-ring 19 is inserted into the O-ring groove 26.

At this time, the locking projections 10, 1,
Since the positional relationship between 0, 10 and the insertion grooves 27, 27, 27 of the engaging portion 25 is shifted by about 60 degrees in the circumferential direction, the case body 6
Is rotated in the circumferential direction by 60 degrees from the correct direction (the direction in which the rotation stop projection 11 is located directly above the holding cylinder portion 9), and the holding cylinder portion 9 is inserted into the engagement portion 25. 10 are inserted into the corresponding insertion grooves 27 respectively.

When the holding cylinder 9 is inserted into the engagement part 25, the front surface of the case body 6 comes into contact with the O-ring 19.

From this state, while pressing the case body 6 toward the lamp body 2A, the case body 6 is moved in the direction in which the rotation preventing projection 11 and the curved end portion 29a of the fixed wall 29 approach each other around the adjusting screw 7. Rotate.

At this time, the locking projections 10, 1,
0, 10 smooth surfaces 10b, 10b, 10b
Will ride on the inclined surfaces 28a, 28a, 28a of the front end surface of the case body 6, and the case body 6 is further moved slightly forward,
The O-ring 19 is crushed.

On the other hand, the rotation stopping projection 11 moves toward the one end 29 a of the fixed wall 29.

When the case body 6 is rotated by approximately 60 degrees, the rotation stopping projection 11 comes into contact with one end 29 a of the fixed wall 29. From here, when the case body 6 is further rotated,
The rotation stop projection 11 pushes the fixed wall 29 in a direction away from the support cylinder 23 and slides along the surface of the fixed wall 29 while bending the fixed wall 29, and the locking projection of the holding cylinder 9. 10,
10, 10 are flat surfaces 28b, 28 of the front end surface of the engaging portion 25.
Simultaneously with the ride on the b and 28b, the detent projection 11 comes to a position corresponding to the engagement notch 30 of the fixed wall 29, the bent fixed wall 29 returns to the original state, and the detent projection 11 is engaged. The notch 30 is engaged.

As described above, the case body 6 of the leveling device 5 is attached to the lamp body 2A as a fixed member, and the holding cylinder 9 of the case body 6 is attached in a state of being pressed against the engaging portion 25. Therefore, it does not easily come off, and the engagement notch 30 between the detent projection 11 and the fixed wall 29
The leveling device 5 does not rotate with respect to the lamp body 2A.

[0066]

As described above, the mounting structure of the leveling device according to the present invention has the adjusting screw connected to the rotating end of the tilting member whose irradiation angle is changed by being tilted. A driving mechanism for driving the adjusting screw is a structure for mounting the leveling device to the fixed side member housed in the case body, and the adjusting screw is inserted into one of the fixed side member and the case body. A holding cylinder portion is formed, and an engaging portion for locking the holding cylinder portion is formed on the other of the case body and the fixed side member, and the case body is fixed with the holding cylinder portion inserted into the engaging portion. By rotating the case body by a predetermined angle with respect to the side member, the case body is locked to the fixed side member, and a rotation preventing projection is provided on one of the fixed side member and the case body. Forming an engaged portion on the other of the body and the fixed side member with which the detent projection is engaged, and rotating the case body by the predetermined angle with respect to the fixed side member with the holding cylinder portion inserted into the engaging portion. In this case, the detent projection and the engaged portion are engaged with each other.

Therefore, in the mounting structure of the headlamp leveling device according to the present invention, the leveling device simply rotates the case body by a predetermined angle with respect to the fixed member with the holding cylinder portion inserted into the engagement portion. It can be attached to the fixed side member, the workability of attaching to the fixed side member is good, and no special parts are required for mounting, and the number of parts can be reduced compared to the conventional mounting structure, Moreover, when the case body is attached to the fixed-side member in a predetermined direction, the detent projection and the engaged portion are engaged with each other, so that the positioning and rotation-stop of the leveling device with respect to the fixed-side member are performed. It can be realized with a simple structure.

In the above embodiment, the holding cylinder is provided on the case body of the leveling device, and the supported portion is provided on the lamp body which is a fixed member. Conversely, the holding cylinder is provided on the lamp body. The support may be provided on the case body.

Further, the shapes and structures of the respective parts shown in the above embodiments are merely examples for realizing the present invention, and the technical scope of the present invention is limited thereby. Should not be interpreted.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part showing an outline of a mounting structure of a leveling device of the present invention, showing a state before mounting the leveling device to a fixed member.

FIG. 2 is a rear view showing an engagement portion of a fixed side member.

FIG. 3 is a front view of the leveling device.

FIG. 4 is a front view showing a state in which a holding cylinder portion of the leveling device is inserted into an engagement portion of a fixed-side member.

FIG. 5 is a front view showing a state in which the leveling device is attached to a fixed member.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 shows a second embodiment of the mounting structure of the leveling device of the present invention, together with FIGS. 8 to 11, and is an exploded perspective view of a main part showing a state before the leveling device is mounted on the fixed member. FIG.

FIG. 8 is a rear view showing an engaging portion of the fixed side member.

FIG. 9 is a front view showing a state in which a holding cylinder portion of the leveling device is inserted into an engagement portion of the fixed side member.

FIG. 10 is a front view showing a state where the leveling device is attached to a fixed member.

FIG. 11 is a sectional view taken along the line XI-XI in FIG. 10;

FIG. 12 is a rear view showing an example of a mounting structure of a conventional leveling device.

FIG. 13 is a sectional view taken along the line XIII-XIII in FIG.

[Explanation of symbols]

 2 Lamp body (fixed side member) 3 Reflector (tilting member) 5 Leveling device 6 Case body 7 Adjusting screw 9 Holding cylinder 11 Rotation stop 13 Engagement 16 Depression (engaged part) 2A Lamp body 25 Joint 30 Engagement notch (engaged part)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-282046 (JP, A) JP-A-6-36603 (JP, A) JP-A 1-126007 (JP, U) JP-A 63- 29807 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F21M 3/20 B60Q 1/06

Claims (1)

(57) [Claims] An adjusting screw connected to a rotating end of a tilting member that changes an irradiation angle of irradiation light by being tilted, wherein a driving mechanism for driving the adjusting screw is a case body. A mounting structure of the leveling device housed in the fixed side member, wherein the holding cylinder portion through which the adjusting screw is inserted is formed in one of the fixed side member and the case body, and the case body and the fixed side member are On the other hand, an engaging portion for locking the holding cylinder portion is formed, and the case body is rotated by a predetermined angle with respect to the fixed side member in a state where the holding cylinder portion is inserted into the engaging portion, so that the case body is As well as being locked to the member, a detent projection on one of the fixed side member and the case body,
Further, an engaged portion is formed on the other of the case body and the fixed side member to be engaged with the detent projection, and the case body is fixed to the fixed side member with the holding cylinder portion inserted into the engagement portion. A mounting structure for a leveling device, wherein the rotation-preventing projection and the engaged portion are engaged when rotated by an angle.